| 3300mm口径W波段辐射计偏馈反射面天线设计 |
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| 引用本文： | 彭树生,吴礼,李向芹.3300mm口径W波段辐射计偏馈反射面天线设计[J].红外与毫米波学报,2013,32(6):545-549. |
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| 作者姓名： | 彭树生 吴礼 李向芹 |
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| 作者单位： | 南京理工大学 电光学院,南京理工大学 电光学院,南京理工大学 电光学院 |
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| 摘 要： | 本文为W波段辐射计设计了一副口径为300mm偏馈反射面天线,天线要求的工作频率为94.5GHz,副瓣电平低于-25dB,交叉极化电平低于-30dB,半功率波束宽度优于1?。文中采用较小偏置角以改善偏置天线的交叉极化特性,采用焦面场匹配法和模比利用法设计了匹配馈源,通过仿真优化设计,得到良好的波瓣等化电平和驻波比。测量结果表明,测量值与理论值吻合,满足辐射计的指标要求。
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| 关 键 词： | W波段 偏馈反射面天线 匹配馈源 模比法 |
| 收稿时间： | 2012/10/8 0:00:00 |
| 修稿时间： | 4/2/2013 12:00:00 AM |
Design of 300mm W-band radiometer offset-feed reflector antenna |
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| PENG Shu-Sheng,WU Li and LI Xiang-Qin.Design of 300mm W-band radiometer offset-feed reflector antenna[J].Journal of Infrared and Millimeter Waves,2013,32(6):545-549. |
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| Authors: | PENG Shu-Sheng WU Li and LI Xiang-Qin |
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| Affiliation: | School of Electronic and Optical Engineering, Nanjing University of Science and Technology,School of Electronic and Optical Engineering, Nanjing University of Science and Technology and School of Electronic and Optical Engineering, Nanjing University of Science and Technology |
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| Abstract: | A 300mm offset-feed reflector antenna is designed for a W-band radiometer in this paper, its parameter are 94.5GHz operating frequency, sidelobe level of less than-25dB, cross polarization level of less -30dB and half-power beamwidth of better than 1 ?. A smaller offset angle is adopted to improve the antenna cross polarization characteristics, and this matching feed is designed with the focal plane field matching method and the modulus ratio method and is optimized to get good VSWR and lobe equalizing level. Measurement results show that this antenna meets the requirements of the radiometer and its measured and theoretical values are coincided. |
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| Keywords: | W-band offset fed reflector antenna matching feed modulus ratio method |
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